Study of Parallel PFC Technology based on Parallel inverters
This paper proposes a parallel PFC technology which is shunted between the power supply and the load.Parallel inverters with frequency-doubling carrier phase shifted SPWM technique is used as the main circuit structure to reduce the device currents rate and switch stress and enhance the equivalent switch frequency.The phase angle of the source current reference is determined by the source voltage,while the magnitude of that is obtained from controlling the DC side capacitor voltage of the inverter.The PFC is realized by inner current loop P control and outer voltage loop PI control for its simple arithmetic,good robustness.The simulation and experimental results show that this system can achieve a high power factor of 0.99 and low total harmonic distortion with linear or nonlinear load.So the validity and efficiency of the proposed parallel PFC technology are confirmed by the numerical results.
power factor correction parallel inverters frequency-doubling carrier phase shifted SPWM double closed-loop control
Min Zhang Xudong Song Zhenhua Zhu Zhenxing Yin
Jiangsu Automation Research Institution, Lianyungang Jiangsu, China
国际会议
沈阳
英文
320-325
2012-05-25（万方平台首次上网日期，不代表论文的发表时间）